Police identify Travis Reinking as a person of interest, say he was arrested last year after crossing a White House security barrier

A gunman who killed four and wounded four others at a Waffle House outside Nashville Sunday morning was arrested last summer after he crossed a security barrier at the White House, police said.

The suspected gunman, Travis Reinking, is a 29-year old from Morton, Illinois, police said in a news conference Sunday afternoon. He opened fire at a Waffle House in Antioch, Tenn., around 3:25 a.m. local time on Sunday, killing three customers and one employee. He was armed with an AR-15 assault style rifle.